<template>
    <div class="login_container">
      <div class="login_box">
          <!-- 头像区域 -->
          <div class="avatar_box">
              <img src="../assets/logo.png" alt="">
          </div>
          <!-- 登录表单区 -->
          <el-form  ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
              <!-- 用户名 -->
  <el-form-item prop="username">
    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
  </el-form-item>
<!-- 密码 -->
    <el-form-item prop="password">
    <el-input v-model="loginForm.password" prefix-icon="iconfont  icon-3702mima" type="password"></el-input>
  </el-form-item>
<!-- 按钮区域 -->
   <el-form-item  class="btns">
   <el-button type="primary" @click="login">登录</el-button>
   <el-button type="info" @click="resetLoginForm">重置</el-button>
  </el-form-item>
          </el-form>
      </div>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //这是登录表单的数据绑定对象
            loginForm:{
                username:'',
                password:''

            },
            //这是表单验证规则对象
            loginFormRules:{
                //验证用户名是否合法
                username:[
                     { required: true, message: '请输入登录名称', trigger: 'blur' },
                     { min: 3, max: 10, message: '长度在 3 到 10个字符', trigger: 'blur' }
                ],
                //验证密码是否合格
                password:[
                     { required: true, message: '请输入登录密码', trigger: 'blur' },
                     { min: 6, max: 15, message: '长度在 6 到 15个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        //点击重置按钮，重置登录表单
        resetLoginForm(){
            // console.log(this);
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid=>{
if(!valid) return;
const {data:res}=await this.$http.post("login",this.loginForm);
if(res.meta.status!==200) return this.$message.error('登陆失败')
this.$message.success("登录成功");
//1.将登录成功之后的token，保存到客户端的sessionStorage中
//1.1项目中出了登录之外的其他API接口，必须在登录之后才能访问
//1.2token只应在当前网站打开期间生效，所以将token保存到sessionStorage中
console.log(res);
window.sessionStorage.setItem("token",res.data.token);
//2.通过编程试导航跳转到主页面，路由地址是/home
this.$router.push("home");
            })
        }
    }
}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}

.avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius:50% ;
    padding: 10px;
    box-shadow:0 0 10px #ddd ;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    img{
        width: 100%;
        height: 100%;
        border-radius:50% ;
       
        background-color: #eee;
    }
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
.btns{
    display: flex;
    justify-content: flex-end;
}
</style>